Manufacture of dipped rubber goods



' of the solvent 'leaving arubber coating which rubber, such as surgeons gloves, finger cots, Having thus described my invention, what 65 Patented Feb. 13,1923. 1,445,080

- UNITED STATES PATENT mac .4.. MANUFACTURE OF DIPPED RUBBER Goons. N0 Drawing. I v Application filed October 3,0, 1922. Serial No. 598,023.

To aZZ lL'/lt)7I IfiIf"1 lull/ concern: a for example, a mixture of Para rubber ande it kiiqnvn-tl'i'atj, Mauro): M. ITARRISON; gasoline in the. proportions of three gallons a citizen of the'l"nited- States, and resident of gasoline to one pound of Para rubber, to :of Akron, intthe county of Snnnnit and State whieh'l add one fluid ounce of butyl alde-' .5 of ()l iiothafiefinvented certain new and use- 'hyde. The rubber may be. cut or divided :ful Improvenients "i'n' l'the Manufacture of into small pieces and subjected to the action Dipped Rubber-"Goods; of which the followof the gasoline until dissolved therein, and ing is'a specification. I the butyl aldehyde added a'nd the mixture My present invention relatesto improveagitated untilauniform cement is prodliced.

10 mentsm the manufacture of rubber goods in 'lhereafter the forms'are dipped 1n tlle-cewhich the riibber' is appliedor used in the ment compound in the customary manner .form of aliqu'id solution of rubber in a volto produce the coating.

' atile solvent. which is used as a coating or When the. forms are properly-covered the impregm'iting conqiositit-in. the e'vaporatior coating is vulcanized.--preferably by the use ofsulphnr chloride,eitherbyjthe cold procis subsequently viilcianized Such liquid ce-. ess or vapor process as ordinarily practiced. I enema-111 foiiimpregnating and water- I have found that a small percentage of the .1 proofing fabri'csf'and'also in the manufacture butyl aldehyde remains in the finished :11 of certain. articles composed wholly of thin ticle.

and the like. claim is: I Inthe impregnating or water-proofing of l. The herein described method of making fabrics, the fabric, articles themselves may a rubber solution forthe manufacture of be dipped directly in. or have the liquid cedipped goods and the like which consists in 25 ment otherwise applied thereto' in the well adding to a solution of rubber in a volatileknown ways, while in the production' of solvent a'small proportion of butyl aldehyde. article made wholly of rubber,-a core of the 2. The hereiiulescribed method of making shape of the desired. article is prm'ided. a rubber solution for the manufacture of which core is dipped one or more times in dipped goods and the like whiehconsists in 30-the liquid which forms a coating thereon.lwd'ding tolasuitable liquid rubber eement In either case, the coating is subsequently butyl, aldehyde in the proportion of from vulcanized. I have found thatbymlding to "three to tenper-cent. v or incorporating in the cement a small pro- 3. A rubber article of manufacture proportion of butyl aldehyde, the durability of duced by the 'dipped process, containing a 35 the articles is greatly increased and their small proportion of'butyl aldehyde. lifetime in .use is practically doubled. 4. A rubber article of manufacture pro- The invention comprises the novel method duced by a deposit of rubber from a volatile. and article hereinafter described and 'particsolution. which article contains a small proularl \"detined in the appended claims. .\c-' portion of butyl aldehyde. 40 cording to my present invention I prepare a liquid rubber cement comprising a 85 rubber cement or solutionof rubbenin :1 vol-'- solution of rubber in a volatile solvent conatile' solvent of any ap )roved type. and add taini'ng' a 'small prtqiortion; of butyl alde-.

thereto or incorporate therewith a small pro-' hydc. {a v r portion of butyl aldehyde, say from three to I lntestlmony whereof I atlix'my. sn nature. 45 ten per cent. Such a cement may comprise BLXRI'ON-M. HARR SON. 

